岩土工程学报Issue(8)：1394-1399,6.DOI:10.11779/CJGE201408003
筑坝土石料的统一广义塑性本构模型
Generalized plasticity model for soil and coarse-grained dam materials
朱晟 1魏匡民 2林道通1
作者信息
- 1. 河海大学水文水资源与水利水电工程科学国家重点实验室，江苏南京 210098
- 2. 河海大学水电学院，江苏南京 210098
- 折叠
摘要
Abstract
The triaxial test data show that the stress ratio at the failure state of compacted rockfill and gravel significantly decreases with the increase of confining pressure, while their stress ratio at the critical state is substantially constant with high confining pressure. The expressions for the stress ratios at the failure state and the critical state are established according to the experimental data. For the existing generalized plasticity model which does not reasonably reflect the compressibility of soil-rockfill, a practical generalized plasticity constitutive model for soil aggregates is proposed considering complex loading conditions by adopting the improved dilatancy equation and using the indoor compression and triaxial test results. The calculated values are in good agreement with the experimental data by compiling programs for the above model to simulate the test load of earth-rockfill materials. The proposed model can reasonably reflect their stress and deformation characteristics.关键词
弹塑性/本构模型/土石料/堆石坝Key words
elasto-plasticity/constitutive model/earth-rockfill material/embankment dam分类
建筑与水利引用本文复制引用
朱晟,魏匡民,林道通..筑坝土石料的统一广义塑性本构模型[J].岩土工程学报,2014,(8):1394-1399,6.
